Essаy Questiоn #2 Mаke sure yоur аnswer tо the following two-sample confidence interval is written on paper and submitted to the final exam upload and score module before you leave Zoom. The PLNU is trying to determine if basketball players weigh more that baseball players. A random sample was taken of 43 basketball players and their mean weight was 192 lbs with a standard deviation of 21.4 lbs. A random sample of 58 baseball players was taken and their mean weight was 187 lbs with a standard deviation of 19.1 lbs. Give a 95% confidence interval for the mean difference in the average weights of PLNU basketball and baseball players. Be sure to show all formulas, work, and numbers used (e.g. & critical value). At the end of your work, write a one or two sentence summary in non-statistical language to describe what you have found, not how you found it.
Essаy Questiоn #2 Mаke sure yоur аnswer tо the following two-sample confidence interval is written on paper and submitted to the final exam upload and score module before you leave Zoom. The PLNU is trying to determine if basketball players weigh more that baseball players. A random sample was taken of 43 basketball players and their mean weight was 192 lbs with a standard deviation of 23.4 lbs. A random sample of 58 baseball players was taken and their mean weight was 187 lbs with a standard deviation of 17.1 lbs. Give a 90% confidence interval for the mean difference in the average weights of PLNU basketball and baseball players. Be sure to show all formulas, work, and numbers used (e.g. & critical value). At the end of your work, write a one or two sentence summary in non-statistical language to describe what you have found, not how you found it.
Essаy Questiоn #4 Mаke sure yоur аnswer tо the following T-test is written on paper and submitted to the final exam upload and score module before you leave Zoom. A researcher reads a paper introducing a new test of executive function. The authors of the paper had tested healthy volunteers and found that on average they score 81 on the new test. The researcher believes that patients with schizophrenia will score less than the normal average on this test of executive function. They test 20 patients with schizophrenia. The average score for the patients is 77 with a standard deviation of 11.9. Is there significant evidence at the 5% significance level to support the researcher’s claim? Be sure to include the following: 1. State an appropriate null and alternative hypotheses. 2. Find a test statistic. Show all your work- formula used and answer. 3. Find the P-value. 4. Make a conclusion. 5. Write one to two sentences explaining what your test found in the context of the problem using non statistical language.